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No matter what goal you want to achieve, you can measure your progress as a percentage of the goal. For example, if you have a sales goal for the month, you could measure your sales thus far as a percentage…
In statistics and scientific studies, using variables is an important aspect of structuring and completing a test or survey. While most people are familiar with the independent and dependent variables, another type of variable can change the outcome of the…
An atom is a basic constituent of matter that consists of a positively-charged core (nucleus) surrounded by a cloud of negatively-charged electrons. By definition, atoms are neutral entities because the positive charge of the nucleus is cancelled by the negative…
The sun radiates energy in all directions. Most of it dissipates into space, but the tiny fraction of the sun’s energy that reaches Earth is enough to heat the planet and drive the global weather system by warming the atmosphere…
Atomic theory has evolved since ancient times. Scientists have taken the hypothesis of Greek scholars and have built on it with their different discoveries and theories regarding the atom, which derives from the Greek word “atomos,” meaning indivisible. Since then,…
The third smallest state in the United States, Connecticut has a total surface area of 5,018 square miles. It is bordered by New York to its west, Massachusetts to its north, Rhode Island to its east and Long Island Sound…
The term “hedgehog” is actually a general term for 17 individual species of hedgehogs. Their common name comes from how and where they find food since they’re often found foraging for insects, worms and other small creatures in shrubs and…
Volt amperes are a unit used to describe the electrical load in engineering. Volt amperes can be abbreviated VA. You can also use metric prefixes such as “kilo-” and “mega-.” It takes 1,000 volt amperes to equal one kilo-volt ampere…
Biodiversity is a key measure of the health of any ecosystem, and of our entire planet. Every organism in an ecosystem, or biome, relies on other organisms and the physical environment. For example, plant and animal species need each other…
If you had the same views of the Earth and moon as the Voyager 1 spacecraft had of Saturn when it flew by the ringed planet in 1980, you would see the two familiar orbs casting dramatic shadows. To an…
